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Mike,
Thank you so much for the information.
All,
I'm having challenges with two points:
1. One file vs. Multiple Files = I'm not able to figure out how to use Buy[Index] where Index is calculated. As you see below, I am processing the file and every row in the file for each bar / column in the array. I suspect this is wrong. Would you have suggestions on how to calculate and use "Index".
5. Would you suggest a url where I can learn about fgets maximum buffer length? I'm not able to locate a function to test for the success / failure of fgets.
Below is the current code which works in Formula Editor | Verify Syntax but crashes the backtest:
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filename = "C:\\data\\signal_";
fileext = ".txt";
filename = filename + Name() + fileext;
Buy = 0;
Sell = 0;
dt = DateTime();
RowNum = 0;
fh = fopen(filename ,"r");
if(fh)
{
Indices = BarIndex();
while(! feof(fh)) //Have we reached end of file?
{
Row = fgets(fh);
RowNum += 1;
if(1 + StrCount(Row,",")== 4) //Make sure we have four values per Row; Date, Action, PositionSize, Price
{
ActionDate = StrToDateTime(StrExtract(Row,0));
Action = StrExtract(Row,1);
ActionPositionSize = StrExtract(Row,2);
ActionPrice = StrExtract(Row,3);
//Next Row finds the correct bar but I cannot figure out how to use it effectively.
ActionBar = ValueWhen(dt==ActionDate, Indices);
Buy = IIf(Action=="Buy" AND dt==ActionDate,1,Buy );
Sell = IIf(Action=="Sell" AND dt==ActionDate,1,Sell);
}
}
fclose(fh);
}
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